Preheat oven to 400 degrees. Unfold each pastry sheet. Spread pesto over dough and sprinkle with cheese. Starting at long sides, toll up the dough from both sides, meeting in the middle. Lightly dampen the center seam of the pastry between the 2 rolls and press together. Cut into thick slices and place on ungreased baking sheets. Bake for about 20 minutes.